Sea ice vibration observations on landfast ice

Data was obtained from 31-Aug-2021 to 10-Oct-2021. The experiment consists of 3x Geophone loggers deployed on landfast ice just north of Casey station. Geophone loggers record vibrations using a tri-axis GS-ONE geophone. The tri-axis geophone was dug slightly in the top layer of the ice (few centimeters), and the hole was filled with a mixture of snow and fresh water to create a slush for rapid refreezing. The geophone converts motion of a mass suspended by a spring to a voltage. The voltage is proportional to the velocity of the mass' motion. The GS-One has a (open-circuit) sensitivity of 85.8 V/m/s (+- 3.5%) and a corner frequency of 10Hz. Spurious frequency is 240 Hz. The geophone will still respond to vibrations of frequencies本数据集采集时段为2021年8月31日至2021年10月10日。本次实验共部署3台检波器记录仪，设置于凯西站（Casey station）北侧的固定冰（landfast ice）上。 本次实验采用三分量GS-ONE型检波器（tri-axis GS-ONE geophone）采集振动信号。该三分量检波器被埋入冰表层数厘米深处，钻孔后以雪与淡水的混合物填充制成雪泥，以实现快速冻结固位。 检波器将弹簧悬挂重物的机械运动转换为电压信号，该电压与重物运动的速度呈正比。GS-ONE型检波器的（开路）灵敏度为85.8 V/m/s（±3.5%），截止频率为10Hz，寄生频率为240Hz。该检波器仍可响应特定频率的振动。